<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>window frames</title>
    </head>
    <frameset rows="100,*">
        <frame src="frame_top.html" name="frametop" >
        <frameset cols="25%,*">
            <frame src="frame_left.html" name='frameleft' >
            <frame src="subframe_main.html" name='frameright'>
        </frameset>
    </frameset>
    <script type="text/javascript">
        function setFocusInOtherFrame() {
            return "bad";
        }
    </script>
</html>